which keeps correct time at sea level

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A pendulum clock, which keeps correct time at sea level, loses 15s per day when taken to the top of a mountain. If the radius of the earth is 6400 km, the height of the mountain is
30
Oct
A pendulum clock, which keeps correct time at sea level, loses 15s per day when taken to the top of a mountain. If the radius of the earth is 6400 km, the height of the mountain is A pendulum clock loses 15s per day when taken to the top of a mountain. If the radius [...]
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